BIOC58H3 Chapter 4: ch4.docx

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mauvecat225

15 May 2012

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We are currently in the quarternary ice agebegan 2 mya. Doesn"t feel like it cause were in the warm part-interglacial. Oligoscene- btw 35 and 15 mya earths temp was 4 degrees warmer because more co2. Major force of global climate came about by collision of indian and asian plates (55 mya). Caused an uplift to what became the tibetan plateu. Increased erosion, more silicate, more calcium silicate reacting with co2 precipating in form of calcium carbonate. First indications of shift in stability happened 42 mya in eocene. The end miocene- c4 plant better advantage of lower co2. Although lowering of co2 over tertiary facilitated speciation and rise of c4, lowering co2 itself cant explain their global spread at end of miocene: maybe tectonic activity, seasonal precipation, Studied teeth opposed to soils because feeding enhances isotope signal, soil more complex (combines both c13 and c12 )

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Please use your own words to answer these questions!

http://www.whoi.edu/main/topic/ocean-acidification (This is the article)

(1) What is the relationship between global warming and ocean acidification?

(2) What happens to ocean waters as the atmospheric concentration of CO₂ rises? Be specific in your response. Hint: For additional help, click on Carbon Dioxide in Seawater along the webpageâs sidebar.

(3) What marine organisms do you anticipate will be most greatly impacted by ocean acidification? Why?

(4) Scientists have found evidence of a massive release of CO₂ in the past (Palocene-Eocene boundary, 55 million ya) that is in some ways analogous to what is occurring today. Some marine species acclimated â some adapted â and some became extinct. Based upon the differences between that earlier event and what is occurring today, what would you anticipate would be the effect on marine fauna if CO₂ levels continue to rise at current rates for the next fifty years?

USE YOUR OWN WORDS!

Rising CO₂ levels can impact our environment in a number of different and many times unanticipated ways. Last week we considered the effect of increased atmospheric CO₂ levels on leaf stomatal densities. This week we will explore the effect of increased CO₂ levels on ocean waters. Read the article posted on the Woods Hole Oceanographic Institutionâs website entitled Ocean Acidification and answer the questions that follow.

1. What is the relationship between global warming and ocean acidification?

2. What happens to ocean waters as the atmospheric concentration of CO₂ rises? Be specific in your response. Hint: For additional help, click on Carbon Dioxide in Seawater along the webpageâs sidebar.

3. What marine organisms do you anticipate will be most greatly impacted by ocean acidification? Why?

4. Scientists have found evidence of a massive release of CO₂ in the past (Palocene-Eocene boundary, 55 million ya) that is in some ways analogous to what is occurring today. Some marine species acclimated â some adapted â and some became extinct. Based upon the differences between that earlier event and what is occurring today, what would you anticipate would be the effect on marine fauna if CO₂levels continue to rise at current rates for the next fifty years?

Here is the link for the article: http://www.whoi.edu/main/topic/ocean-acidification

coppertoad665

Chapter 15:Nuclear Power (Environmental Science)

1. Describehow energy is produced in a nuclear reaction. Distinguish betweenfission and fusion.

2. What arethe four generations of nuclear reactors? Describe the advantagesof Generations III and IV.

Chapter 17:Environmental Hazards and Human Health (Environmental Science)

1. What arethe four main categories of human environmental hazards? Giveexamples of each.

Chapter 18:Global Climate Change (Environmental Science)

1. Provide abrief synopsis of global climate change. What are the main issuesand trends?

2. What hasbeen discovered about global climate trends in the past? How docontemporary trends relate to past records?

Chapter 19:Atmospheric Pollution (Environmental Science)

1. Describethe origins of industrial smog, photochemical smog, and atmosphericbrown clouds. What are the differences in the cause and appearanceof each?

2. Describethe international efforts that are currently in place to protectour ozone shield. What evidence is there that such efforts havebeen effective?

Chapter 20:Water Pollution and Its Prevention (Environmental Science)

1. Name anddescribe three methods of treating raw sludge and give the endproduct(s) that may be produced from each method.

2. Describethe TMDL program. How does it address source pollution, and whatrole do water quality criteria play in the program?

Chapter 21:Municipal Solid Waste (Environmental Science)

1. What arethe major problems of placing waste in landfills? How can thoseproblems be managed?

2. Whatmaterials are most commonly recycled? Describe how that isdone.

Chapter 11:Stewards of Creation (Biology)

1. Explainsome ways in which secularism and materialism have contributed tohuman exploitation of the earth.

2. Cite someexamples of how greed and pride lead to environmental p

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BIOC58H3 Chapter 4: ch4.docx

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